Bolt-clipper.



.No. 721 ,232. :PATENTED PEB.24,1903.

' H'. K. PORTER.

BOLT CLIPPER.

APPLIOATION III-ED SEPT. 12, 1902.

10 MODEL.

UNITED STATES PATENT ()FFICE.

HENRY K. PORTER, OF CHELSEA, MASSACHUSETTS.

BOLT-CLIPPER.

SPECIFICATION forming part of Letters Patent No. 721,232, dated February24, 1903.

Application filed September 12, 1902. Serial No. 123,059. (No model.)

To aZZ whom it may concern:

Be it known that I, HENRY K. PORTER, a citizen of the United States,residing at Chelsea, in the county of Sufiolk and State ofMassachusetts, have invented a new and useful Improvement inBolt-Clippers, of which the following is a specification.

My invention relates particularly to improvements in the bolt-clipperdescribed in Letters Patent of the United States numbered 484,670,issued to me October 18,1892; and the object of my present improvementsis to provide a clipper having cutting-blades made separate from thegripping-jaws of the tool, butattachable thereto and made capable ofadjustment, so as to cut in various positions and relations to the jawswhich operate them, thus widening the range of usefulness of the tool,as will be described.

I attain the object stated by the mechanism illustrated in theaccompanying drawings, in which Figure 1 is a side elevation of aclipper generally like that described in my said former patent, shownwith the handles broken off to economize space, but withthe jaws andcutters made to conform with mypresent improvement. Fig. 2 is ahorizontal section on line 2 2, Fig. 1, and as viewed from below saidline. Fig. 3 is a vertical section through the center of theclipper-head shown in Fig. 1. Fig. 4 embraces a vertical cross-sectionon line 4 4 and a like section through the jaws only on line 4 4, Fig.3, viewed from the left of said line. Fig. 5 is a perspective of adetached portion of the forwardpart of the under jaw and of the cutterattachable thereto; and Fig. 6 is a plan of the upper edge of the same,showing the cutter adjusted thereon in an oblique position.

Referring to the drawings, the tool, as illustrated, is comprisedof apair of right and left handles 7 and 8, pivoted-together at their middlejoint 9 and adj ustably'jointed, respectively, to the left jaw 19 andright jaw 11, the toothed jaws being interlocked and otherwise boundtogether by a bottom strap 12, bolts 13 and 14, top strap 15, lock-nuts16 and 17, lock-plate bolt 18, and lock-plate 19. The parts named aresubstantially the same as those described in my said former patentexcept as to the construction of the jaw-levers, which in said patentwere formed at their forward ends with integral cutting edges or blades,while in the present case they are enlarged in that part and formed withflat opposite faces or seats, to which separately-constructed cuttersare attached and by which they are operated through proper movement ofthe handles. The fiat surfaces or seats 20 and 21 thus formed on theleverjaws are centrally drilled to receive bolts 22 and 23 for attachingthe appropriately-formed cutters thereto. These jaw-seats are alsogrooved radially or diametrically partly around the central bolt-hole,as shown clearly at 24, 25, 26, and 27 in Fig- 5, The cutters 28 and 29are appropriately formed to rest properly on said seats 20 and 21 andare centrally drilled and threaded and'firmly held upon the jaws by thebolts 22 and 23, extended up to their heads through the jaws andthreaded into the center of the cutters, as shown. Cutting edges 30 and31 are formed on the cutter bodies or blocks, as shown, having a lengthof straight blade equal to the diameter of their circular bodies. Uponthe under side of the cutter is formed a diametrical tongue 32, parallelwith the cutting edge and adapted to be inserted in and to interlockwith one ofthe diametrical grooves to help hold the blade in adjustment.The blades are shownin Fig. 1 as adjusted to cut on the extreme forwardends of the jaw-levers. In t h at-case the tongue 32 on the cutter is inthe appropriate groove, (marked 24 in Fig.5.) By unscrewing the bolts 22and 23 far enough to permit the tongues of their respective cutters tobe withdrawn from the grooves and turned about the axis of the bolt, soas to be inserted, one in groove 25 and one in its corresponding groove25 in the opposite jaw, then the cutters will bein the relativepositions indicated by cutter 29 in Fig. 6 and when again secured by thebolts will cut obliquely to the axis of the jaws. If in like manner thecutter 29 should be adjusted and secnred'jwith its tonguein groove 27and the opposite cutter with its tongue in the corresponding groove 27,then the clipper would cut on a line at right angles to the position ofthe cutters shown in Fig. 1 and in line with the axis of the jaws. Thusthe cutters may be adjusted around their centers to cut at any desiredangle to a line which will coincide with said section-line 2 2 in Fig. 1within the range of a half-circle. By such capability of adjustment thesingle tool is made capable of clipping bolts under varying conditionswhich might require the use of several tools with non-adjustable blades,but of special construction as to the positions of their fixed blades. Alongitudinal hole 33 is formed by opposing semicircular grooves 34 and35, milled in the edges of the jaws and extending backward through theteeth 36 and 37 from the opening between the cutters to the openingcaused by the divergence of the jaws. This hole 33 serves to permit theboltrod to pass more or less into or through the same as may be requiredin passing the blades over the ends of bolts and clipping variouslengths.

It is obvious that such special constructions as above referred to mightbe made in the manner described employing only a single diametricalgroove in each jaw arranged according to the required positions of thecutting-blades and not variable by adjustment therefrom.

In practice it quite frequently occurs that bolts to be clipped are sosituated that they cannot be reached by the usual form of nonadjustablecutters, but might be readily clipped by cutters arranged across theouter ends of the jaws, as shown in Fig. 1, and others by cuttersarranged obliquely, as illustrated in Fig. 6. Hence the convenience andusefulness of the tool are greatly enlarged by the improvement nowdescribed. When the tool is practically used, it is held by the handles,which are moved to and from each other within the fixed limits of theirmovement, and the action of the jaws resulting therefrom is so wellunderstood that further description in that respect is deemedunnecessary. The leverjaws thus enlarged and formed with fiat oppositesurfaces with sufiicient clear space between adapts them to serve veryconveniently and effectively for various forms of cutting attachments,and forming part, as they do, of the described system of compound leversthey constitute very powerful means for operating such attachments.

It is obvious that the cutting-blades or bits may be either permanentlyor adj ustably secured to the jaw-levers in a variety of ways other thanthe tongues and grooves shown, as by pins and holes or a larger numberof able on, and operated by, the jaws, so as to cut in variouspositions,substantially as specified.

2. In a bolt-clipper, the combination of a pair of lever-jaws formedwith opposite flat faces, or circular seats, having one or morediametrical, or radial, grooves therein; a pair of cutters adapted to beadj ustably attached to the jaws, and to interlock with the groovestherein; and a pair of fastening-bolts extended through the jaws andthreaded into the cutters; all substantially as specified.

3. The combination of a pair of handles pivoted together; with a pair oflevers adjustably connected with the handles, and pivotally clampedbetween straps extended across their opposite sides, and bolted togetherthrough the levers and securely fastened; and having interlocked teethon their adjacent and longitudinally-grooved edges, and formed withenlarged front ends, having opposite flat surfaces, adapted to serve asoperative jaws for various attachments, all substantially as specified.

4. The combination of handles 7 and 8, pivoted together; lever-jaws 10and 11, adjustably connected with the handles, and formed with edgegrooves and interlocking teeth, and provided with grooved seats 20 and21; cutters 28 and 29; bolts 22 and 23, by which the cutters areattached to the jaws; strap 12 extended across one side of the levers;pivotbolts 13 and 14 extended from strap 12 through the jaws andopposite plates; strap 15 extended across the jaws opposite strap 12;toothed lock-nuts threaded on the pivot-bolts lock-plate 19 andlock-plate bolt 18; all substantially as specified.

HENRY K. PORTER.

Witnesses:

EUGENE HUMPHREY, EDWARD E. SHERMAN.

ICC

